Final answer:
The average speed of the baseball player is calculated using the formula distance divided by time, resulting in 3.65 m/s, which is answer choice A.
Step-by-step explanation:
To calculate the average speed of the baseball player running from the batter's box to first base, we use the formula for speed which is the distance traveled divided by the time taken. The formula for average speed is Speed = Distance / Time.
The baseball player runs 27.4 meters in 7.5 seconds. Therefore, his average speed (v) can be calculated as:
v = Distance / Time
v = 27.4 m / 7.5 s
v = 3.653333... m/s
Rounding this to two decimal places gives an average speed of 3.65 m/s. Thus, the correct answer is A. 3.65 m/s.